106 lines
2.6 KiB
C
106 lines
2.6 KiB
C
#if !defined(LUMENARIUM_SHARED_FILE_TRACKER_H)
|
|
#define LUMENARIUM_SHARED_FILE_TRACKER_H
|
|
|
|
#if !defined(OS_FILE_HANDLE_TYPE)
|
|
# error "You must define an OS_FILE_HANDLE_TYPE"
|
|
#endif
|
|
|
|
#if !defined(OS_FILE_MAX_PATH)
|
|
# error "You must define an OS_FILE_MAX_PATH"
|
|
#endif
|
|
|
|
#if !defined(OS_FILE_INVALID_HANDLE)
|
|
# error "You must define an OS_FILE_INVALID_HANDLE"
|
|
#endif
|
|
|
|
#define open_files_cap 32
|
|
global u64 open_files_len = 1; // zero is invalid
|
|
global char open_file_paths[open_files_cap][OS_FILE_MAX_PATH];
|
|
global u64 open_file_paths_len[open_files_cap];
|
|
global OS_FILE_HANDLE_TYPE open_files[open_files_cap];
|
|
|
|
void open_files_init();
|
|
bool open_files_has_room();
|
|
OS_FILE_HANDLE_TYPE open_files_get_handle(File_Handle handle);
|
|
String open_files_get_path(File_Handle handle);
|
|
File_Handle open_files_put_handle(OS_FILE_HANDLE_TYPE os_handle, String path);
|
|
void open_files_rem_file(File_Handle handle);
|
|
|
|
////////////////////////////////////////////////
|
|
// IMPLEMENTATION
|
|
|
|
void
|
|
open_files_init()
|
|
{
|
|
for (u32 i = 0; i < open_files_cap; i++)
|
|
{
|
|
open_files[i] = OS_FILE_INVALID_HANDLE;
|
|
}
|
|
}
|
|
|
|
bool open_files_has_room() { return open_files_len < open_files_cap; }
|
|
|
|
OS_FILE_HANDLE_TYPE
|
|
open_files_get_handle(File_Handle handle)
|
|
{
|
|
assert(handle.value < open_files_len);
|
|
return open_files[handle.value];
|
|
}
|
|
|
|
String
|
|
open_files_get_path(File_Handle handle)
|
|
{
|
|
assert(handle.value < open_files_len);
|
|
String result = {
|
|
.str = (u8*)open_file_paths[handle.value],
|
|
.len = open_file_paths_len[handle.value],
|
|
.cap = open_file_paths_len[handle.value],
|
|
};
|
|
return result;
|
|
}
|
|
|
|
File_Handle
|
|
open_files_put_handle(OS_FILE_HANDLE_TYPE os_handle, String path)
|
|
{
|
|
assert(path.len < OS_FILE_MAX_PATH);
|
|
|
|
File_Handle result = {};
|
|
if (os_handle != OS_FILE_INVALID_HANDLE)
|
|
{
|
|
if (open_files_has_room())
|
|
{
|
|
result.value = open_files_len++;
|
|
}
|
|
else
|
|
{
|
|
// search for emtpy index
|
|
for (u32 i = 1; i < open_files_cap; i++)
|
|
{
|
|
if (open_files[i] == OS_FILE_INVALID_HANDLE)
|
|
{
|
|
result.value = i;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (result.value != 0)
|
|
{
|
|
open_files[result.value] = os_handle;
|
|
memory_copy(path.str, (u8*)open_file_paths[result.value], path.len);
|
|
open_file_paths[result.value][path.len] = 0; // null term
|
|
open_file_paths_len[result.value] = path.len;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
void
|
|
open_files_rem_file(File_Handle handle)
|
|
{
|
|
assert(handle.value < open_files_len);
|
|
open_files[handle.value] = OS_FILE_INVALID_HANDLE;;
|
|
}
|
|
|
|
|
|
|
|
#endif // LUMENARIUM_SHARED_FILE_TRACKER_H
|